React is the same base frontend tech but the way you write React, with hooks and state management has changed quite a bit since its initial release. That said

React is the same base frontend tech but the way you write React, with hooks and state management has changed quite a bit since its initial release. That said I've never bothered to try to become an expert in any particular language or framework. I learn the general underlying concepts and end up googling for the syntax for the first few days when I start using a new library or framework.